diff --git a/lib/marginalia/comment.rb b/lib/marginalia/comment.rb
index f4a77de..52ac44a 100644
--- a/lib/marginalia/comment.rb
+++ b/lib/marginalia/comment.rb
@@ -162,6 +162,11 @@ def self.database
         end
       end
 
+      def self.db_role
+        return if marginalia_adapter.pool.nil?
+        ActiveRecord::Base.current_role
+      end
+
       if Gem::Version.new(ActiveRecord::VERSION::STRING) < Gem::Version.new('6.1')
         def self.connection_config
           return if marginalia_adapter.pool.nil?
diff --git a/test/query_comments_test.rb b/test/query_comments_test.rb
index a5cb9c9..2cb06fe 100644
--- a/test/query_comments_test.rb
+++ b/test/query_comments_test.rb
@@ -9,6 +9,10 @@ def pool_db_config?
   Gem::Version.new(ActiveRecord::VERSION::STRING) >= Gem::Version.new('6.1')
 end
 
+def database_role_available?
+  Gem::Version.new(ActiveRecord::VERSION::STRING) >= Gem::Version.new('6.0.0')
+end
+
 require "minitest/autorun"
 require "mocha/minitest"
 require 'logger'
@@ -259,6 +263,14 @@ def test_socket
     end
   end
 
+  if database_role_available?
+    def test_db_role
+      Marginalia::Comment.components = [:db_role]
+      API::V1::PostsController.action(:driver_only).call(@env)
+      assert_match %r{/\*db_role:writing}, @queries.first
+    end
+  end
+
   def test_request_id
     @env["action_dispatch.request_id"] = "some-uuid"
     Marginalia::Comment.components = [:request_id]